CN202254130U - System for matching pump head flow rate of central air-conditioner water system with resistance flow of air-conditioner pipeline system - Google Patents
System for matching pump head flow rate of central air-conditioner water system with resistance flow of air-conditioner pipeline system Download PDFInfo
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- CN202254130U CN202254130U CN2011203807372U CN201120380737U CN202254130U CN 202254130 U CN202254130 U CN 202254130U CN 2011203807372 U CN2011203807372 U CN 2011203807372U CN 201120380737 U CN201120380737 U CN 201120380737U CN 202254130 U CN202254130 U CN 202254130U
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Abstract
The utility model provides a system for matching a pump head flow rate of a central air-conditioner water system with a resistance flow rate of an air-conditioner pipeline system, comprising at least one water pump, a plurality of water cooling air-conditioner main engines, two pressure detectors and a controller, wherein the water pumps are connected with each other in parallel and water outlets of the water pumps are connected with corresponding water inlets of the plurality of the water cooling air-conditioner main engines through a water input main pipe; the two pressure detectors are respectively arranged on the water input main pipe and a water output main pipe; a signal output end of each differential pressure detector is connected with a pressure detection signal input end of the controller; and a control signal output end of the controller is connected with control signal input ends of the water pumps and used for controlling the rotating speed of the water pumps. According to the utility model, the flow rate head of the water pumps can be adjusted by controlling the rotating speed of the water pumps through water input and output differential pressure and a frequency converter, so that the problem that the head is overlarge when the water pumps have partial flow rates is solved, the rotating speed of the water pumps can be adjusted by the controller according to the requirements, and the problem that the energy consumption of the water pumps is very high is solved.
Description
Technical field
The utility model relates to central air-conditioning, and especially the pump rotary speed of central air-conditioning is controlled system, specifically a kind of central air conditioning water system pump head flow and the flux matched system of air conditioning pipe system drag stream.
Background technology
At present, central air-conditioning is an air handling system indispensable in the modern architecture.Wherein cooling water pump or cooling water pump group are for central air-conditioning provides the water yield in the central air conditioner system, and the water yield gets into unit and unit carries out heat exchange, takes away the heat in the unit through water then.Chilled water pump or chilled water pump group are hot and cold water is provided and is provided with for the hot and cold water that produces central air conditioner main machine is transported to indoor end, and the hot and cold water that produces central air conditioner main machine is transported to indoor end-equipment and carries out heat exchange to regulate IAQ.Cooling water pump or cooling water pump group and chilled water pump or chilled water pump group account for the electric weight about the about 20%-30% of whole central air conditioner system energy consumption in the central air conditioner system when the unit oepration at full load.Central air conditioner main machine has offloading functions after reaching design temperature, and particularly the transition season air-conditioning uses the less main frame unloading of capacity and water pump does not have, and at this moment water pump accounts for the entire system energy consumption even up to more than the 40%-60%.
Along with energy shortage and global resources exhaustion, and national to energy-conservation attention, and how a kind of efficient conveying method of water pump is provided is the problem that experts explore always.For energy-conservation, in the HVAC design specification, also stipulate especially.The main frame that for example in central air conditioner system, does not wait more than 2 according to the capacity setting of whole system is equipped with corresponding 2 above coolant pumps or coolant pump group again, is equipped with corresponding 2 above refrigerating water pumps or refrigerating water pump group simultaneously again.So that perhaps use the variation of capacity progressively to increase unlatching until opening whole units and corresponding water pump, to realize energy saving purposes according to weather from a unit.
Cooling and chilled water pump in being configured to central air conditioner system the time lift and flow by disposing under maximum, the worst situation.But because of the resistance of ducting is that variation along with flow changes.So system when the part water pump is opened is not owing to reach metered flow, resistance can be obviously less than normal.At this moment the lift of water pump will be wasted for no reason, causes pump operating point to depart from and causes decrease in efficiency, and motor load is too small simultaneously, and idle power consumption rises, and the energy consumption of motor own increases, and electric current is excessive, can heating burnout when serious.That is to say that SR at this moment is too little.Though the lift of water pump has surplus capacity, the resistance of ducting is too small during owing to the part water pump operation, and lift is more than needed to cause water pump to depart from efficiency area.
Because the too small water pump of the resistance of ducting the excessive water pump electric current that causes of lift occurs and surpasses rated power.The long-time running water pump can burn.In order to address this problem common way is to close corresponding water pump valve to regulate lift to adapt to the variation of the resistance of ducting.But can cause water pump electric power to waste like this, step on the throttle oiling just as driving and stepping on brake simultaneously.
Many different water pump parallel connections of the various flow lifts of employing are also arranged.To open different water pump combinations according to system situation, still many water pumps can cause the system construction difficulty to increase disadvantages such as fault rate height.And the water pump of when opening a small amount of water pump, opening can not make full use of the latus rectum minimizing resistance of other pipelines.
Also there is the people to change low-lift pump to mate the way of actual lift, still because the pump head that reconfigures also is the lift of fixing according to the actual lift of the system that is moving.When the resistance of ducting increases perhaps pipe flow speed increase.Obviously the decrease in efficiency of water pump will appear in the water pump of configuration low lift in the pipe-line system of high-drag.Though just be to be equipped with low-lift pump when flow smaller conduit resistance is also less, can satisfy, in case will be not enough at normal flow and lift pump head, the phenomenon that also can cause the water pump overload to burn motor.
The theory that water pump is not simple addition in parallelly connected state down-off.In other words when 2 water pumps during simultaneously to a pipeline input flow rate because the complicated resistance of ducting and water pump manufacturing wait other factors.Can cause flow loss, 2 water pump parallel connections generally have only 80% flow, generally have only 70% flow during 3 water pump parallel connections.
For the assurance system wherein a water pump stop can not causing the current adverse current, in the outlet of each water pump a check valve can be set all, check valve also can lose the part pump efficiency.
The somebody utilizes many pumps that frequency converter is installed, and the rotating speed that utilizes frequency converter to regulate many pumps is then regulated lift and flow, but obviously such way economy is not high, and the price of investment frequency converter is higher than the price difference of water pump far away.It is lower to that is to say that 2 low discharge water pumps are replaced by 1 water pump price that can satisfy 2 same low discharges more greatly, and it is also lower to be replaced by 1 price that satisfies 2 less frequency converters of power with 2 less frequency converters equally.The cost performance that is to say big water pump and frequency converter will be higher than little.
Therefore, hope can have a water pump just can satisfy central air conditioning water system pump head flow and the air conditioning pipe system resistance and the flow matches system of an above main frame flow.To overcome above deficiency.The flow and the lift that can change water pump according to the flow and the resistance of central air-conditioning water pipe system simultaneously.To realize central air conditioning water system pump head flow and air conditioning pipe system resistance and flow matches.
Summary of the invention
The purpose of the utility model is to hope to have a water pump can satisfy the equipment of an above central air conditioner system flow; The flow and the lift that can change water pump according to the flow and the resistance of central air-conditioning water pipe system simultaneously; To realize central air conditioning water system pump head flow and air conditioning pipe system resistance and flow matches; The central air conditioning water system lift impedance match system that the utility model proposes, simple effectively, can improve pump efficiency to address the above problem.
The technical scheme of the utility model is:
A kind of central air conditioning water system pump head flow and the flux matched system of air conditioning pipe system drag stream; It comprises at least one water pump, many Water cooled air conditioners main frames, two pressure detectors and controllers; Described water pump parallel connection, the delivery port of water pump is through the corresponding water inlet of many Water cooled air conditioners main frames of water inlet manifold connection, and described two pressure detectors are installed in respectively on the water inlet manifold and outfall sewer of Water cooled air conditioners main frame; Be used to detect Inlet and outlet water pressure; The signal output part of each pressure detector all links to each other with the pressure detecting signal input of controller, and the control signal output of controller links to each other with the water pump control signal input part, the rotating speed of control water pump.
The quantity of the water pump of the utility model equals or is less than the quantity of main frame.
The water yield of any water pump of the utility model is greater than the flow of any central air-conditioning water-cooled main frame.
The system of the utility model also comprises the two temperatures detector; Described two temperatures detector is installed in respectively on the water inlet manifold and outfall sewer of Water cooled air conditioners main frame; Be used to detect the Inlet and outlet water temperature, the signal output part of each Temperature Detector all links to each other with the temperature detection signal input of controller.
The beneficial effect of the utility model:
The utility model utilizes Inlet and outlet water pressure reduction and Frequency Converter Control pump rotary speed to satisfy multiple host flow lift coupling to regulate the separate unit water pump; Solved the opening section water pump and the too small lift problems of too of SR; Solve the problem of many parallels connection of pumps decrease in efficiency, solved the problem that flow system flow resistance and pump head flow can not mate; A water pump satisfies the multiple host traffic demand, and equipment investment reduces, and has saved investment; The rotating speed of water pump can be adjusted by controller according to demand, efficiently solves the too high problem of pump energy consumption.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the structural representation of conventional central air-conditioner water system.
Wherein: 1, Water cooled air conditioners main frame; 2, water pump; 3, check valve; 4, y-type filter; 5, pressure detector; 6, Temperature Detector; 7, controller; 8, water inlet manifold; 9, outfall sewer.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further described.
As shown in Figure 1; A kind of central air conditioning water system pump head flow and the flux matched system of air conditioning pipe system drag stream; It comprises at least one water pump 2, many Water cooled air conditioners main frames 1, two pressure detectors 5 and controllers 7; Described water pump 2 parallel connections, the delivery port of water pump 2 are through the water inlet of many Water cooled air conditioners main frames 1 of water inlet manifold 8 connections, and described two pressure detectors 5 are installed in respectively on the water inlet manifold 8 and outfall sewer 9 of Water cooled air conditioners main frame 1; Be used to detect Inlet and outlet water pressure; The signal output part of each pressure detector all links to each other with the pressure detecting signal input of controller, and the control signal output of controller 7 links to each other with the control signal input of water pump 2, the rotating speed of control water pump 2.
The water yield of any water pump 2 of the utility model is greater than the flow of any Water cooled air conditioners main frame 1.
In the utility model; This system also comprises two temperatures detector 6; Described two temperatures detector 6 is installed in respectively on the water inlet manifold 8 and outfall sewer 9 of Water cooled air conditioners main frame 1; Be used to detect the Inlet and outlet water temperature, the signal output part of each Temperature Detector 6 links to each other with the temperature detection signal input of equal controller.
The principle explanation:
Pressure reduction its flow in two ends is corresponding will to reach metered flow as long as the Water cooled air conditioners main frame satisfies; Just can satisfy central water-cooled air-conditioner host operating mode; The way that so just can utilize big its rotating speed of flow lift water pump control to satisfy main frame two ends pressure reduction realizes that a water pump satisfies the multiple host flow, to realize central air conditioning water system pump head flow and air conditioning pipe system resistance and flow matches.
The specific embodiment:
The pressure sensor that is installed on the water trunk line 8 into detects pipeline pressure respectively with the pressure sensor 5 that is installed on the water outlet trunk line 9.To detect the pressure reduction on the main frame intake-outlet; If detect the pressure reduction of pressure reduction less than host requirements, then controller 7 will be controlled the pump rotary speed quickening, to satisfy trunk line intake-outlet pressure reduction; If at this time establish main frame newly; Will cause house steward's pressure reduction to descend, at this moment controller 7 will increase rotating speed control water pump speedup, to satisfy house steward's pressure reduction.So just realized that the separate unit water pump satisfies the multiple host traffic requirement through the realization of control rotating speed, has also just overcome all deficiencies traditionally.
The utility model does not relate to all identical with the prior art prior art that maybe can adopt of part to be realized.
Claims (4)
1. central air conditioning water system pump head flow and the flux matched system of air conditioning pipe system drag stream; It is characterized in that it comprises at least one water pump (2), many Water cooled air conditioners main frames (1), two pressure detectors (5) and controller (7); Described water pump (2) parallel connection; The delivery port of water pump (2) connects the corresponding water inlet of many Water cooled air conditioners main frames (1) through water inlet manifold (8); Described two pressure detectors (5) are installed in respectively on the water inlet manifold (8) and outfall sewer (9) of Water cooled air conditioners main frame (1), are used to detect Inlet and outlet water pressure, and the signal output part of each pressure detector all links to each other with the pressure detecting signal input of controller; The control signal output of controller links to each other with the control signal input of water pump (2), the rotating speed of control water pump (2).
2. central air conditioning water system pump head flow according to claim 1 and the flux matched system of air conditioning pipe system drag stream is characterized in that the quantity of described water pump (2) equals or be less than the quantity of main frame.
3. central air conditioning water system pump head flow according to claim 1 and the flux matched system of air conditioning pipe system drag stream is characterized in that the flow of the water yield of described any water pump (2) greater than any central air-conditioning water-cooled main frame (1).
4. central air conditioning water system pump head flow according to claim 1 and the flux matched system of air conditioning pipe system drag stream; It is characterized in that this system also comprises two temperatures detector (6); Described two temperatures detector (6) is installed in respectively on the water inlet manifold (8) and outfall sewer (9) of Water cooled air conditioners main frame (1); Be used to detect the Inlet and outlet water temperature, the signal output part of each Temperature Detector (6) all links to each other with the temperature detection signal input of controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203807372U CN202254130U (en) | 2011-09-29 | 2011-09-29 | System for matching pump head flow rate of central air-conditioner water system with resistance flow of air-conditioner pipeline system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203807372U CN202254130U (en) | 2011-09-29 | 2011-09-29 | System for matching pump head flow rate of central air-conditioner water system with resistance flow of air-conditioner pipeline system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202254130U true CN202254130U (en) | 2012-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203807372U Expired - Fee Related CN202254130U (en) | 2011-09-29 | 2011-09-29 | System for matching pump head flow rate of central air-conditioner water system with resistance flow of air-conditioner pipeline system |
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| CN (1) | CN202254130U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106247562A (en) * | 2016-08-31 | 2016-12-21 | 珠海格力电器股份有限公司 | Variable flow control device of air conditioner, air conditioning system and air conditioner control method |
| CN113719442A (en) * | 2021-09-14 | 2021-11-30 | 上海凯泉泵业（集团）有限公司 | High-efficient pump package system |
-
2011
- 2011-09-29 CN CN2011203807372U patent/CN202254130U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106247562A (en) * | 2016-08-31 | 2016-12-21 | 珠海格力电器股份有限公司 | Variable flow control device of air conditioner, air conditioning system and air conditioner control method |
| CN113719442A (en) * | 2021-09-14 | 2021-11-30 | 上海凯泉泵业（集团）有限公司 | High-efficient pump package system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: JIANGSU TIANNA ENERGY-SAVING TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: WUXI YONGXIN TECHNOLOGY CO., LTD. Effective date: 20150701 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150701 Address after: 214205, 298, Xingye Road, ring garden, Yixing, Jiangsu, Wuxi Patentee after: JIANGSU TEKENE ENERGY-SAVING TECHNOLOGY CO., LTD. Address before: 214200, Wuxi City, Yixing City Industrial Park Road, No. 289, building, building, floor 11 Patentee before: Wuxi Yongxin Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20190929 |